发明人冯建国,黄志刚,朱建伟. "Method for the Synthesis of Ethyl 1-(5-chloro-6-oxo-1,6-dihydro-4-pyridazinyl)-4-piperidinecarboxylate" [P]. 中国发明专利, 专利号 CN 114113334 B, 授权公告日 2015-03-19.
发明人黄志刚,沈红梅,何建平. "A Process for Preparing High-Purity Ethyl 1-(5-chloro-6-oxo-1,6-dihydro-4-pyridazinyl)-4-piperidinecarboxylate" [P]. 中国发明专利, 专利号 CN 112172926 B, 授权公告日 2025-04-04.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2023, 831, (4), 6091-6118.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2014, 1758, 766-793.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 1-(5-chloro-6-oxo-1,6-dihydro-4-pyridazinyl)-4-piperidinecarboxylate Using HRMS and NMR". J. Pharm. Biomed. Anal., 2011, 135, 6833-6859.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2012, 2007, (10), 4068-4077.